WO2017150051A1 - Secondary battery module - Google Patents

Secondary battery module Download PDF

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Publication number
WO2017150051A1
WO2017150051A1 PCT/JP2017/003505 JP2017003505W WO2017150051A1 WO 2017150051 A1 WO2017150051 A1 WO 2017150051A1 JP 2017003505 W JP2017003505 W JP 2017003505W WO 2017150051 A1 WO2017150051 A1 WO 2017150051A1
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WO
WIPO (PCT)
Prior art keywords
secondary battery
gas discharge
battery module
circuit board
conversion unit
Prior art date
Application number
PCT/JP2017/003505
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French (fr)
Japanese (ja)
Inventor
篤 関根
Original Assignee
日立オートモティブシステムズ株式会社
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Application filed by 日立オートモティブシステムズ株式会社 filed Critical 日立オートモティブシステムズ株式会社
Priority to JP2018502956A priority Critical patent/JP6612966B2/en
Publication of WO2017150051A1 publication Critical patent/WO2017150051A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a secondary battery module.
  • the secondary battery module is configured by arranging a plurality of secondary battery cells in a case and electrically connecting the positive and negative terminals of each secondary battery cell to each other by a bus bar or the like.
  • the secondary battery module includes one or a plurality of such secondary battery modules, and is connected to a vehicle-side controller via a power supply terminal and a signal connector.
  • the secondary battery module is required to be miniaturized, and it is required to reduce the height of the secondary battery module for miniaturization.
  • the distance between the circuit board and the cleavage valve (gas discharge valve) of the secondary battery cell is reduced, and high-temperature gas ejected from the cleavage valve is applied to the circuit board. For this reason, the electronic components in the circuit board are affected, and the subsequent control of the secondary battery becomes difficult.
  • Patent Document 1 discloses a battery module structure in which an insulating plate is provided on an upper part of a battery cleavage valve and a circuit board for controlling a secondary battery cell is disposed thereon.
  • the secondary battery module of the present invention includes a battery group in which a plurality of prismatic secondary batteries each provided with a gas discharge valve on one surface are stacked so that the gas discharge valves are exposed in the same direction, and the battery A secondary battery module having a circuit board disposed on a gas discharge valve of the group and a cover member disposed between the circuit board and the battery group, wherein the cover member includes at least one of the square two
  • the secondary battery has an opening provided at a position facing the gas discharge valve, and a flange that is disposed to face the opening on the circuit board side and extends in a direction along the plate surface of the circuit board.
  • the present invention it is possible to prevent high-temperature gas from being directly applied to the circuit board and to prevent the gas in the secondary battery module from stagnating.
  • FIG. 1 is a top perspective view showing an appearance of a secondary battery module 1 according to the present embodiment.
  • the secondary battery module 1 includes a case constituted by a case main body 2 and an upper lid 3.
  • HV terminals 81 and 21 are provided at both longitudinal ends of the upper surface of the secondary battery module 1.
  • the secondary battery module 1 supplies power to an electric vehicle, a hybrid electric vehicle, or an electric device by connecting an HV cable to the HV terminals 81 and 21.
  • the HV terminal 81 is on the (+) side and the HV terminal 21 is on the ( ⁇ ) side.
  • a signal connector 71 is disposed on the upper surface of the secondary battery module 1.
  • the signal connector 71 is a signal connector for the controller of the secondary battery module 1 and is connected to the vehicle-side controller to receive information exchange and supply of power (for example, 12V).
  • information exchange and supply of power for example, 12V.
  • the left-right direction, the front-rear direction, and the up-down direction are respectively illustrated directions.
  • FIG. 2 is an exploded perspective view of the secondary battery module 1.
  • the partition member 5 is formed of, for example, a resin such as PBT (polybutylene terephthalate).
  • the secondary battery cell 4 is, for example, a lithium ion secondary battery.
  • the secondary battery cell 4 is a rectangular secondary battery cell in which a power generation element (not shown) is accommodated in a battery container formed by joining a battery can 42 and a battery lid 41 and a non-aqueous electrolyte is injected. is there.
  • the battery can 42 and the battery lid 41 are made of a metal such as aluminum, for example.
  • the battery cover 41 is provided with a gas discharge valve 41a at substantially the center. The gas discharge valve 41a discharges a high-temperature gas upward when the internal pressure of the secondary battery cell 4 increases due to overcharge or the like.
  • a pressing cover 6 is provided above a region where the secondary battery cells 4 and the partition members 5 are arranged.
  • the pressing cover 6 is for pressing and fixing the secondary battery cell 4 in the case body 2 from above, and a gas discharge conversion to be described later at a position facing the gas discharge valve 41 a of the secondary battery cell 4.
  • Part 60 is provided.
  • the pressing cover 6 is fixed to the case body 2 by a pair of band plates 10.
  • the pressing cover 6 is formed of a flame retardant resin such as PP or PPE (modified polyphenylene ether).
  • the case body 2 accommodates a relay base set 8 and a relay 82 on the left end side of a region where the secondary battery cell 4 and the partition member 5 are accommodated.
  • the relay 82 is attached to a relay base set 8 that is disposed adjacent to the left end side of the secondary battery cell 4, and conducts / cuts off the electrical connection between the secondary battery cell 4 and an external device.
  • the circuit board 7 is arranged at the approximate center of the upper surface of the pressing cover 6 in the front-rear direction.
  • the circuit board 7 is fixed to the case body 2 by a fastening member such as a screw.
  • the circuit board 7 is electrically connected to the inter-cell bus bar 9 that connects the secondary battery cells 4, and measures and monitors the voltage and the like of each secondary battery cell 4.
  • control components for controlling a relay 82 (contactor) electrically connected to the secondary battery cell 4 are arranged.
  • FIG. 3 is an exploded perspective view of a main part of the secondary battery module 1.
  • FIG. 3 is an exploded perspective view showing a state in which an upper lid 3 and a circuit board 7 are removed from the exploded perspective view shown in FIG. 2.
  • the secondary battery cell 4 is provided with a gas discharge valve 41 a in the approximate center of the battery lid 41.
  • a plurality of secondary battery cells 4 are stacked in the left-right direction, and the gas discharge valve 41a is disposed so as to be exposed upward.
  • the pressing cover 6 includes a gas discharge conversion unit 60 at a position facing the gas discharge valve 41 a of the secondary battery cell 4.
  • a plurality of gas discharge conversion units 60 are arranged in the left-right direction corresponding to the gas discharge valve 41a. Details of the gas discharge conversion unit 60 will be described later.
  • the case body 2 is formed with an inlet 22 for taking a cooling medium such as air into the case and an outlet 23 for discharging the cooling medium from the case on the right side in the left-right direction.
  • the gas discharged upward from the gas discharge valve 41 a hits the gas discharge conversion unit 60, turns to the left, passes through the inside of the case body 2, and is discharged from the discharge port 23.
  • FIG. 4 is a perspective view of the gas discharge conversion unit 60 provided in the pressing cover 6.
  • one gas discharge conversion unit 60 is illustrated, but the other gas discharge conversion units 60 provided in the pressing cover 6 have the same configuration.
  • the gas discharge conversion unit 60 is formed integrally with the pressing cover 6 and has an opening 60a at a position facing the gas discharge valve 41a.
  • a flange 60b is provided on the opening 60a, and a side wall 60c is connected to the pressing cover 6 on the three sides of the front, rear, and right of the opening 60a, and is connected to the flange 60b. .
  • the flange portion 60b is supported on the opening 60a by the side wall portion 60c.
  • the left direction of the gas discharge conversion part 60 is open without the side wall part 60c.
  • the side wall part 60c may be provided also in the left direction of the gas discharge
  • FIG. 5 is a cross-sectional view of the main part in the left-right direction including the gas discharge conversion unit 60.
  • the gas discharge conversion part 60 provided in the pressing cover 6 is arranged at a position above the secondary battery cell 4 and facing the gas discharge valve 41a.
  • a circuit board 7 is disposed above the pressing cover 6.
  • a control component 70 a that controls a relay 82 (contactor) electrically connected to the secondary battery cell 4 is disposed.
  • Each of the flange portions 60 b of the gas discharge conversion unit 60 extends in the stacking direction (left direction) of the secondary battery cells 4 along the plate surface of the circuit board 7.
  • the gas discharge conversion unit 60 converts the discharge direction of the gas discharged from the gas discharge valve 41a of the secondary battery cell 4 to the left direction along the plate surface of the circuit board 7, and from the discharge port 23 (see FIG. 3). Exhaust the gas. This prevents the gas discharged from the gas discharge valve 41a from directly hitting the circuit board 7. For example, by protecting the control component 70a disposed on the circuit board 7 from high-temperature gas, the control component 70a is prevented from becoming uncontrollable, and the relay 82 (which is electrically connected to the secondary battery cell 4) ( The contactor) can be controlled.
  • the secondary battery module 1 includes a battery group in which a plurality of secondary battery cells 4 each provided with a gas discharge valve 41a are stacked so that the gas discharge valve 41a is exposed in the same direction.
  • the circuit board 7 is disposed on the gas discharge valve 41a of the battery group, and the pressing cover 6 is disposed between the circuit board 7 and the battery group.
  • the pressing cover 6 includes an opening 60a provided at a position facing the gas discharge valve 41a of at least one secondary battery cell 4, and an opening 60a on the circuit board 7 side.
  • a flange 60b extending in the direction along the plate surface of the circuit board 7.
  • the present invention can be implemented by modifying the embodiment described above as follows. (1) Although a plurality of gas discharge conversion units 60 are provided corresponding to all the gas discharge valves 41a of the secondary battery cell 4, the gas discharge conversion unit 60 is provided in the gas discharge valve 41a at a position corresponding to the control component 70a on the circuit board 7. It is not necessary to provide it in the other position.
  • the gas discharge conversion unit 60 is provided with the side wall 60c on the three sides and the flange 60b on the upper side.
  • the collar part 60b may be provided integrally with the pressing cover 6 or may be a separate body.
  • the collar part 60b is supported by a part of the side wall part 60c, or another member.
  • the pressing cover 6 including the gas discharge conversion unit 60 is formed of a flame retardant resin
  • only the gas discharge conversion unit 60 may be formed of a flame retardant resin.
  • the pressing cover 6 and the gas discharge conversion unit 60 may be configured separately, or a flame retardant resin may be additionally provided in the gas discharge conversion unit 60 as a unit.
  • the present invention is not limited to the above-described embodiment, and other forms conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention as long as the characteristics of the present invention are not impaired. . Moreover, it is good also as a structure which combined the above-mentioned embodiment and a some modification.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

If an insulation plate is disposed so as to block the upper portion of a cleavage valve of a secondary battery cell, gas discharged from the cleavage valve may stagnate and subsequent gas discharge may fail. According to the present invention, a gas discharge conversion unit 60 provided to a pressing cover 6 is disposed at a position above a secondary battery cell 4 so as to face a gas discharge valve 41a. A circuit substrate 7 is disposed above the pressing cover 6. A control component 70a for controlling a relay 82 (contactor) which is to be electrically connected to the secondary battery cell 4 is disposed on the circuit substrate 7. Eaves sections 60b of the gas discharge conversion unit 60 each extend along a plate surface of the circuit substrate 7, and in the layered direction of the secondary battery cell 4. The discharge conversion unit 60 converts a discharge direction of gas discharged from the gas discharge valve 41a of the secondary battery cell 4 into a left direction along the plate surface of the circuit substrate 7, and discharges the gas through a discharge port 23 (see fig. 3).

Description

二次電池モジュールSecondary battery module
　本発明は、二次電池モジュールに関する。 The present invention relates to a secondary battery module.
　近年、リチウムイオン二次電池などの二次電池は電気自動車、ハイブリッド電気自動車、あるいは電気機器の電源として利用されている。
　二次電池モジュールは、複数の二次電池セルをケース内に配列し、各二次電池セルの正・負極端子を、バスバ等により相互に電気的に接続して構成される。二次電池モジュールは、このような二次電池モジュールを１個あるいは複数個備え、電源用端子および信号用コネクタを介して車両側のコントローラと接続されている。 In recent years, secondary batteries such as lithium ion secondary batteries have been used as power sources for electric vehicles, hybrid electric vehicles, or electric devices.
The secondary battery module is configured by arranging a plurality of secondary battery cells in a case and electrically connecting the positive and negative terminals of each secondary battery cell to each other by a bus bar or the like. The secondary battery module includes one or a plurality of such secondary battery modules, and is connected to a vehicle-side controller via a power supply terminal and a signal connector.
　二次電池モジュールは小型化が求められ、小型化する上で二次電池モジュールの高さを低くすることが求められている。特に低背化した二次電池モジュールでは回路基板と二次電池セルの開裂弁（ガス排出弁）との距離が近くなり、開裂弁から噴き出す高熱のガスが回路基板にかかってしまう。そのため、回路基板内の電子部品が影響を受けてその後の二次電池の制御が困難になる。特許文献１には電池の開裂弁の上部に絶縁板を設け、さらにその上に二次電池セルを制御する回路基板が配置された電池モジュール構造が開示されている。 The secondary battery module is required to be miniaturized, and it is required to reduce the height of the secondary battery module for miniaturization. In particular, in a secondary battery module having a reduced height, the distance between the circuit board and the cleavage valve (gas discharge valve) of the secondary battery cell is reduced, and high-temperature gas ejected from the cleavage valve is applied to the circuit board. For this reason, the electronic components in the circuit board are affected, and the subsequent control of the secondary battery becomes difficult. Patent Document 1 discloses a battery module structure in which an insulating plate is provided on an upper part of a battery cleavage valve and a circuit board for controlling a secondary battery cell is disposed thereon.
特開２０１５－１１５２７５号公報JP 2015-115275 A
　しかし、特許文献１に記載された電池モジュールでは、各二次電池セルの内圧が上昇したときに開裂する開裂弁の上部を塞ぐように絶縁板が配置されているため、開裂弁から排出されたガスが停滞してしまい、その後のガス排出がうまくいかない虞がある。 However, in the battery module described in Patent Document 1, since the insulating plate is disposed so as to close the upper part of the cleavage valve that is cleaved when the internal pressure of each secondary battery cell rises, the battery module is discharged from the cleavage valve. There is a risk that gas will stagnate and subsequent gas discharge will not be successful.
　本発明の二次電池モジュールは、一つの面にガス排出弁が設けられた角形二次電池を、前記ガス排出弁が同一方向に露出されるように複数個積層させた電池群と、前記電池群のガス排出弁上に配置された回路基板と、前記回路基板と前記電池群との間に配置されたカバー部材とを有する二次電池モジュールにおいて、前記カバー部材は、少なくとも一つの前記角形二次電池の前記ガス排出弁と対向する位置に設けられた開口部と、前記回路基板側において前記開口部に対向配置され、前記回路基板の板面に沿う方向に延びる庇部とを有する。 The secondary battery module of the present invention includes a battery group in which a plurality of prismatic secondary batteries each provided with a gas discharge valve on one surface are stacked so that the gas discharge valves are exposed in the same direction, and the battery A secondary battery module having a circuit board disposed on a gas discharge valve of the group and a cover member disposed between the circuit board and the battery group, wherein the cover member includes at least one of the square two The secondary battery has an opening provided at a position facing the gas discharge valve, and a flange that is disposed to face the opening on the circuit board side and extends in a direction along the plate surface of the circuit board.
　本発明によれば、回路基板に直接高温のガスがかかるのを防ぎ、二次電池モジュール内のガスが停滞するのを防止することができる。 According to the present invention, it is possible to prevent high-temperature gas from being directly applied to the circuit board and to prevent the gas in the secondary battery module from stagnating.
二次電池モジュールの外観を示す上面斜視図である。It is an upper surface perspective view which shows the external appearance of a secondary battery module. 二次電池モジュールの分解斜視図である。It is a disassembled perspective view of a secondary battery module. 二次電池モジュールの要部の分解斜視図である。It is a disassembled perspective view of the principal part of a secondary battery module. ガス排出変換部の斜視図である。It is a perspective view of a gas discharge conversion part. ガス排出変換部を含む要部断面図である。It is principal part sectional drawing containing a gas discharge | emission conversion part.
　以下、本発明の二次電池モジュールの一実施の形態を、図面を参照して説明する。
　図１は、本実施例を示す二次電池モジュール１の外観を示す上面斜視図である。二次電池モジュール１は、ケース本体２と上蓋３で構成されるケースを備えている。二次電池モジュール１の上面の長手方向両端にはＨＶ端子８１及び２１が設けられている。二次電池モジュール１は、ＨＶ端子８１及び２１にＨＶケーブルを接続することにより、電気自動車やハイブリッド電気自動車、あるいは電気機器に、電力が供給される。本一実施の形態では、ＨＶ端子８１が（＋）側、ＨＶ端子２１が（－）側である。 Hereinafter, an embodiment of a secondary battery module of the present invention will be described with reference to the drawings.
FIG. 1 is a top perspective view showing an appearance of a secondary battery module 1 according to the present embodiment. The secondary battery module 1 includes a case constituted by a case main body 2 and an upper lid 3. HV terminals 81 and 21 are provided at both longitudinal ends of the upper surface of the secondary battery module 1. The secondary battery module 1 supplies power to an electric vehicle, a hybrid electric vehicle, or an electric device by connecting an HV cable to the HV terminals 81 and 21. In the present embodiment, the HV terminal 81 is on the (+) side and the HV terminal 21 is on the (−) side.
　二次電池モジュール１の上面には信号用コネクタ７１が配置されている。信号用コネクタ７１は二次電池モジュール１のコントローラの信号用コネクタであり、車両側のコントローラと接続されて、情報のやり取りや電源（例えば、１２Ｖ）の供給を受ける。
　なお、以下の説明において、左右方向、前後方向、上下方向を、それぞれ、図示の方向とする。 A signal connector 71 is disposed on the upper surface of the secondary battery module 1. The signal connector 71 is a signal connector for the controller of the secondary battery module 1 and is connected to the vehicle-side controller to receive information exchange and supply of power (for example, 12V).
In the following description, the left-right direction, the front-rear direction, and the up-down direction are respectively illustrated directions.
　図２は、二次電池モジュール１の分解斜視図である。
　ケース本体２内には、複数の二次電池セル４、および隣接する二次電池セル４間に介装された仕切り部材５が積層されて左右方向に配列されている。仕切り部材５は、例えば、ＰＢＴ（ポリブチレンテレフタレート）等の樹脂により形成される。 FIG. 2 is an exploded perspective view of the secondary battery module 1.
In the case body 2, a plurality of secondary battery cells 4 and a partition member 5 interposed between adjacent secondary battery cells 4 are stacked and arranged in the left-right direction. The partition member 5 is formed of, for example, a resin such as PBT (polybutylene terephthalate).
　二次電池セル４は、例えば、リチウムイオン二次電池である。二次電池セル４は、電池缶４２と電池蓋４１とを接合して構成された電池容器内に不図示の発電要素が収容され、非水電解液が注入された角形の二次電池セルである。電池缶４２および電池蓋４１は、例えば、アルミニウム等の金属により形成されている。電池蓋４１には、略中央にガス排出弁４１ａが設けられている。ガス排出弁４１ａは、過充電等により二次電池セル４の内部圧力が上昇した際に、高温のガスを上方に吐出する。 The secondary battery cell 4 is, for example, a lithium ion secondary battery. The secondary battery cell 4 is a rectangular secondary battery cell in which a power generation element (not shown) is accommodated in a battery container formed by joining a battery can 42 and a battery lid 41 and a non-aqueous electrolyte is injected. is there. The battery can 42 and the battery lid 41 are made of a metal such as aluminum, for example. The battery cover 41 is provided with a gas discharge valve 41a at substantially the center. The gas discharge valve 41a discharges a high-temperature gas upward when the internal pressure of the secondary battery cell 4 increases due to overcharge or the like.
　ケース本体２内には、二次電池セル４と仕切り部材５とが配列された領域の上方に押圧用カバー６が設けられている。押圧用カバー６は、二次電池セル４をケース本体２内に上方から押圧して固定するためのものであり、二次電池セル４のガス排出弁４１ａと対向した位置に後述するガス排出変換部６０を備えている。押圧用カバー６は、一対のバンドプレート１０によりケース本体２に固定される。押圧用カバー６は、例えば、ＰＰまたはＰＰＥ（変性ポリフェニレンエーテル）等の難燃性樹脂により形成される。 In the case body 2, a pressing cover 6 is provided above a region where the secondary battery cells 4 and the partition members 5 are arranged. The pressing cover 6 is for pressing and fixing the secondary battery cell 4 in the case body 2 from above, and a gas discharge conversion to be described later at a position facing the gas discharge valve 41 a of the secondary battery cell 4. Part 60 is provided. The pressing cover 6 is fixed to the case body 2 by a pair of band plates 10. The pressing cover 6 is formed of a flame retardant resin such as PP or PPE (modified polyphenylene ether).
　ケース本体２には、二次電池セル４と仕切り部材５とが収容された領域の左端側にリレーベース組８およびリレー８２が収容されている。リレー８２は、二次電池セル４の左端側に隣接して配置されたリレーベース組８に取付けられ、二次電池セル４と外部機器との電気的接続を導通/遮断する。 The case body 2 accommodates a relay base set 8 and a relay 82 on the left end side of a region where the secondary battery cell 4 and the partition member 5 are accommodated. The relay 82 is attached to a relay base set 8 that is disposed adjacent to the left end side of the secondary battery cell 4, and conducts / cuts off the electrical connection between the secondary battery cell 4 and an external device.
　押圧用カバー６の上面の前後方向におけるほぼ中央には、回路基板７が配置される。回路基板７は、ねじ等の締結部材により、ケース本体２に固定される。回路基板７は、二次電池セル４を接続するセル間バスバ９に電気的に接続され、各二次電池セル４の電圧等を測定、監視している。回路基板７には、二次電池セル４と電気的に接続されるリレー８２（コンタクタ）を制御する制御部品が配置されている。 The circuit board 7 is arranged at the approximate center of the upper surface of the pressing cover 6 in the front-rear direction. The circuit board 7 is fixed to the case body 2 by a fastening member such as a screw. The circuit board 7 is electrically connected to the inter-cell bus bar 9 that connects the secondary battery cells 4, and measures and monitors the voltage and the like of each secondary battery cell 4. On the circuit board 7, control components for controlling a relay 82 (contactor) electrically connected to the secondary battery cell 4 are arranged.
　図３は、二次電池モジュール１の要部の分解斜視図である。図２に示す分解斜視図から、上蓋３と回路基板７を取り除いた状態の分解斜視図である。
　二次電池セル４は、その電池蓋４１の略中央にガス排出弁４１ａが設けられている。二次電池セル４は、左右方向に複数個積層されており、ガス排出弁４１ａは、上方向に露出されるように配置されている。 FIG. 3 is an exploded perspective view of a main part of the secondary battery module 1. FIG. 3 is an exploded perspective view showing a state in which an upper lid 3 and a circuit board 7 are removed from the exploded perspective view shown in FIG. 2.
The secondary battery cell 4 is provided with a gas discharge valve 41 a in the approximate center of the battery lid 41. A plurality of secondary battery cells 4 are stacked in the left-right direction, and the gas discharge valve 41a is disposed so as to be exposed upward.
　押圧用カバー６には、二次電池セル４のガス排出弁４１ａと対向した位置にガス排出変換部６０を備えている。ガス排出変換部６０は、ガス排出弁４１ａと対応して左右方向に複数個配置されている。ガス排出変換部６０の詳細は後述する。
　ケース本体２には、左右方向の右側部に、空気などの冷却媒体をケース内に取り入れる流入口２２および冷却媒体をケースから排出する排出口２３が形成されている。ガス排出弁４１ａより上方に吐出したガスは、ガス排出変換部６０に当たり左方向に向きを変え、ケース本体２の内部を通り、排出口２３より排出される。 The pressing cover 6 includes a gas discharge conversion unit 60 at a position facing the gas discharge valve 41 a of the secondary battery cell 4. A plurality of gas discharge conversion units 60 are arranged in the left-right direction corresponding to the gas discharge valve 41a. Details of the gas discharge conversion unit 60 will be described later.
The case body 2 is formed with an inlet 22 for taking a cooling medium such as air into the case and an outlet 23 for discharging the cooling medium from the case on the right side in the left-right direction. The gas discharged upward from the gas discharge valve 41 a hits the gas discharge conversion unit 60, turns to the left, passes through the inside of the case body 2, and is discharged from the discharge port 23.
　図４は、押圧用カバー６に設けられているガス排出変換部６０の斜視図である。図４では、一つのガス排出変換部６０を図示しているが、押圧用カバー６に設けられている他のガス排出変換部６０も同様の構成である。 FIG. 4 is a perspective view of the gas discharge conversion unit 60 provided in the pressing cover 6. In FIG. 4, one gas discharge conversion unit 60 is illustrated, but the other gas discharge conversion units 60 provided in the pressing cover 6 have the same configuration.
　ガス排出変換部６０は、押圧用カバー６と一体的に成形され、ガス排出弁４１ａと対向する位置に開口部６０ａを有する。開口部６０ａの上には庇部６０ｂを有し、開口部６０ａの前方向、後方向、および右方向の三方に側壁部６０ｃが押圧用カバー６と連設され、庇部６０ｂと繋がっている。この側壁部６０ｃによって庇部６０ｂが開口部６０ａの上に支持される。ガス排出変換部６０の左方向は、側壁部６０ｃが無く開口している。なお、ガス排出変換部６０の左方向にも側壁部６０ｃを設け、そのうち一部を開口してもよい。すなわち、ガス排出変換部６０の左方向における側壁部６０ｃは、その一部または全部が開口している。したがって、ガス排出弁４１ａより上方に吐出したガスは、ガス排出変換部６０の庇部６０ｂに当たり、ガス排出変換部６０の前方向、後方向、および右方向の三方は側壁部６０ｃで規制され、左方向の開口から噴出する。 The gas discharge conversion unit 60 is formed integrally with the pressing cover 6 and has an opening 60a at a position facing the gas discharge valve 41a. A flange 60b is provided on the opening 60a, and a side wall 60c is connected to the pressing cover 6 on the three sides of the front, rear, and right of the opening 60a, and is connected to the flange 60b. . The flange portion 60b is supported on the opening 60a by the side wall portion 60c. The left direction of the gas discharge conversion part 60 is open without the side wall part 60c. In addition, the side wall part 60c may be provided also in the left direction of the gas discharge | emission conversion part 60, and one part may be opened. That is, a part or all of the side wall 60c in the left direction of the gas discharge conversion unit 60 is opened. Therefore, the gas discharged above the gas discharge valve 41a hits the flange portion 60b of the gas discharge conversion unit 60, and the front, rear, and right sides of the gas discharge conversion unit 60 are regulated by the side wall 60c. It spouts from the opening in the left direction.
　図５は、ガス排出変換部６０を含む左右方向における要部断面図である。
　押圧用カバー６に設けられたガス排出変換部６０は、二次電池セル４の上部であって、ガス排出弁４１ａと対向する位置に配置される。押圧用カバー６の上部には回路基板７が配置される。回路基板７には、二次電池セル４と電気的に接続されるリレー８２（コンタクタ）を制御する制御部品７０ａが配置されている。ガス排出変換部６０の庇部６０ｂの各々は、回路基板７の板面に沿って二次電池セル４の積層方向（左方向）に延びている。ガス排出変換部６０は、二次電池セル４のガス排出弁４１ａから吐出されるガスの排出方向を回路基板７の板面に沿う左方向に変換して、排出口２３（図３参照）よりガスを排出する。これにより、ガス排出弁４１ａから吐出されるガスが回路基板７に直接あたるのを防ぐ。例えば、回路基板７に配置された制御部品７０ａを高温のガスから保護することで、制御部品７０ａが制御不能になることを防止し、二次電池セル４と電気的に接続されるリレー８２（コンタクタ）を制御可能にする。 FIG. 5 is a cross-sectional view of the main part in the left-right direction including the gas discharge conversion unit 60.
The gas discharge conversion part 60 provided in the pressing cover 6 is arranged at a position above the secondary battery cell 4 and facing the gas discharge valve 41a. A circuit board 7 is disposed above the pressing cover 6. On the circuit board 7, a control component 70 a that controls a relay 82 (contactor) electrically connected to the secondary battery cell 4 is disposed. Each of the flange portions 60 b of the gas discharge conversion unit 60 extends in the stacking direction (left direction) of the secondary battery cells 4 along the plate surface of the circuit board 7. The gas discharge conversion unit 60 converts the discharge direction of the gas discharged from the gas discharge valve 41a of the secondary battery cell 4 to the left direction along the plate surface of the circuit board 7, and from the discharge port 23 (see FIG. 3). Exhaust the gas. This prevents the gas discharged from the gas discharge valve 41a from directly hitting the circuit board 7. For example, by protecting the control component 70a disposed on the circuit board 7 from high-temperature gas, the control component 70a is prevented from becoming uncontrollable, and the relay 82 (which is electrically connected to the secondary battery cell 4) ( The contactor) can be controlled.
　以上説明した実施形態によれば、次の作用効果が得られる。
（１）二次電池モジュール１は、一つの面にガス排出弁４１ａが設けられた二次電池セル４を、ガス排出弁４１ａが同一方向に露出されるように複数個積層させた電池群と、電池群のガス排出弁４１ａ上に配置された回路基板７と、回路基板７と電池群との間に配置された押圧用カバー６とを有する。このような二次電池モジュール１において、押圧用カバー６は、少なくとも一つの二次電池セル４のガス排出弁４１ａと対向する位置に設けられた開口部６０ａと、回路基板７側において開口部６０ａに対向配置され、回路基板７の板面に沿う方向に延びる庇部６０ｂとを有する。これにより、回路基板に直接高温のガスがかかるのを防ぎ、二次電池モジュール内のガスが停滞するのを防止することができる。 According to the embodiment described above, the following operational effects can be obtained.
(1) The secondary battery module 1 includes a battery group in which a plurality of secondary battery cells 4 each provided with a gas discharge valve 41a are stacked so that the gas discharge valve 41a is exposed in the same direction. The circuit board 7 is disposed on the gas discharge valve 41a of the battery group, and the pressing cover 6 is disposed between the circuit board 7 and the battery group. In such a secondary battery module 1, the pressing cover 6 includes an opening 60a provided at a position facing the gas discharge valve 41a of at least one secondary battery cell 4, and an opening 60a on the circuit board 7 side. And a flange 60b extending in the direction along the plate surface of the circuit board 7. Thereby, it is possible to prevent high-temperature gas from being directly applied to the circuit board and to prevent the gas in the secondary battery module from stagnating.
（変形例）
　本発明は、以上説明した実施形態を次のように変形して実施することができる。
（１）ガス排出変換部６０は、二次電池セル４の全てのガス排出弁４１ａと対応して複数個設けたが、回路基板７上の制御部品７０ａと対応する位置のガス排出弁４１ａに対向して設けて、他の位置には設けなくてもよい。 (Modification)
The present invention can be implemented by modifying the embodiment described above as follows.
(1) Although a plurality of gas discharge conversion units 60 are provided corresponding to all the gas discharge valves 41a of the secondary battery cell 4, the gas discharge conversion unit 60 is provided in the gas discharge valve 41a at a position corresponding to the control component 70a on the circuit board 7. It is not necessary to provide it in the other position.
（２）ガス排出変換部６０は、三方に側壁部６０ｃを上方に庇部６０ｂを設けたが、少なくとも庇部６０ｂを設けたものであればよい。この場合、庇部６０ｂは、押圧用カバー６と一体的に設けてもよく、別体であってもよい。庇部６０ｂは、側壁部６０ｃの一部、若しく別部材によって支持される。 (2) The gas discharge conversion unit 60 is provided with the side wall 60c on the three sides and the flange 60b on the upper side. In this case, the collar part 60b may be provided integrally with the pressing cover 6 or may be a separate body. The collar part 60b is supported by a part of the side wall part 60c, or another member.
（３）ガス排出変換部６０を含む押圧用カバー６は、難燃性樹脂により形成されることとしたが、ガス排出変換部６０の部分のみを難燃性樹脂で形成してもよい。この場合、押圧用カバー６とガス排出変換部６０を別体の構成としてもよいし、一体としてガス排出変換部６０の部分に難燃性樹脂を追加で設けてもよい。 (3) Although the pressing cover 6 including the gas discharge conversion unit 60 is formed of a flame retardant resin, only the gas discharge conversion unit 60 may be formed of a flame retardant resin. In this case, the pressing cover 6 and the gas discharge conversion unit 60 may be configured separately, or a flame retardant resin may be additionally provided in the gas discharge conversion unit 60 as a unit.
　本発明は、上記の実施形態に限定されるものではなく、本発明の特徴を損なわない限り、本発明の技術思想の範囲内で考えられるその他の形態についても、本発明の範囲内に含まれる。また、上述の実施形態と複数の変形例を組み合わせた構成としてもよい。 The present invention is not limited to the above-described embodiment, and other forms conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention as long as the characteristics of the present invention are not impaired. . Moreover, it is good also as a structure which combined the above-mentioned embodiment and a some modification.
１　　二次電池モジュール
２　　ケース本体
３　　上蓋
４　　二次電池セル
５　　仕切り部材
６　　押圧用カバー
７　　回路基板
２２　　流入口
２３　　排出口
４１ａ　ガス排出弁
６０ａ　　開口部
６０ｂ　　庇部
６０ｃ　　側壁部 DESCRIPTION OF SYMBOLS 1 Secondary battery module 2 Case main body 3 Upper cover 4 Secondary battery cell 5 Partition member 6 Cover 7 Press circuit board 22 Inlet 23 Outlet 41a Gas exhaust valve 60a Opening 60b Gutter 60c Side wall

Claims (8)

  1. 　一つの面にガス排出弁が設けられた角形二次電池を、前記ガス排出弁が同一方向に露出されるように複数個積層させた電池群と、
    　前記電池群のガス排出弁上に配置された回路基板と、
    　前記回路基板と前記電池群との間に配置されたカバー部材とを有する二次電池モジュールにおいて、
    　前記カバー部材は、少なくとも一つの前記角形二次電池の前記ガス排出弁と対向する位置に設けられた開口部と、前記回路基板側において前記開口部に対向配置され、前記回路基板の板面に沿う方向に延びる庇部とを有する二次電池モジュール。     A battery group in which a plurality of prismatic secondary batteries each provided with a gas discharge valve are stacked so that the gas discharge valves are exposed in the same direction;
    A circuit board disposed on a gas discharge valve of the battery group;
    In a secondary battery module having a cover member disposed between the circuit board and the battery group,
    The cover member is disposed opposite to the opening on the circuit board side at an opening provided at a position facing the gas discharge valve of at least one of the square secondary batteries, and is disposed on the plate surface of the circuit board. A secondary battery module having a flange extending in a direction along the direction.
  2. 　請求項１に記載の二次電池モジュールにおいて、
    　前記カバー部材は、前記開口部及び前記庇部によってガス排出変換部を構成し、
    　前記ガス排出変換部は、前記角形二次電池の前記ガス排出弁からのガス排出方向を前記回路基板の板面に沿う方向に変換する二次電池モジュール。     The secondary battery module according to claim 1,
    The cover member constitutes a gas discharge conversion part by the opening and the flange part,
    The gas discharge conversion unit is a secondary battery module that converts a gas discharge direction from the gas discharge valve of the rectangular secondary battery into a direction along a plate surface of the circuit board.
  3. 　請求項２に記載の二次電池モジュールにおいて、
    　前記回路基板には、前記電池群と電気的に接続されるコンタクタの制御部品が配置され、
    　前記ガス排出変換部は、少なくとも前記制御部品の近傍に配置された前記ガス排出弁の位置に対応して設けられる二次電池モジュール。     The secondary battery module according to claim 2,
    The circuit board is provided with contactor control components that are electrically connected to the battery group,
    The gas exhaust conversion unit is a secondary battery module provided corresponding to a position of the gas exhaust valve disposed at least in the vicinity of the control component.
  4. 　請求項２または請求項３に記載の二次電池モジュールにおいて、
    　前記ガス排出変換部は、前記ガス排出弁の各々と対応した位置に設けられる二次電池モジュール。     The secondary battery module according to claim 2 or claim 3,
    The gas discharge conversion unit is a secondary battery module provided at a position corresponding to each of the gas discharge valves.
  5. 　請求項４に記載の二次電池モジュールにおいて、
    　前記ガス排出変換部の前記庇部の各々は、前記回路基板の板面に沿って同一方向に延びている二次電池モジュール。     The secondary battery module according to claim 4,
    Each of the flanges of the gas exhaust conversion unit is a secondary battery module extending in the same direction along the plate surface of the circuit board.
  6. 　請求項５に記載の二次電池モジュールにおいて、
    　前記ガス排出変換部の前記庇部の各々は、前記回路基板の板面に沿って前記角形二次電池の積層方向に延びている二次電池モジュール。     The secondary battery module according to claim 5,
    Each of the flanges of the gas exhaust conversion unit is a secondary battery module extending in the stacking direction of the rectangular secondary battery along the plate surface of the circuit board.
  7. 　請求項５または６に記載の二次電池モジュールにおいて、
    　前記ガス排出変換部は、前記カバー部材に連設されて前記庇部を支持する側壁部を備え、
    　前記回路基板の板面に沿った前記同一方向における前記側壁部の一部または全部は開口している二次電池モジュール。     The secondary battery module according to claim 5 or 6,
    The gas discharge conversion part includes a side wall part that is connected to the cover member and supports the flange part,
    A secondary battery module in which part or all of the side wall portion in the same direction along the plate surface of the circuit board is open.
  8. 　請求項２から請求項７までのいずれか一項に記載の二次電池モジュールにおいて、
    　前記ガス排出変換部は、難燃性樹脂で形成されている二次電池モジュール。
    　     The secondary battery module according to any one of claims 2 to 7,
    The gas discharge conversion unit is a secondary battery module formed of a flame retardant resin.
PCT/JP2017/003505 2016-03-01 2017-02-01 Secondary battery module WO2017150051A1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018123574A1 (en) * 2016-12-27 2018-07-05 パナソニックＩｐマネジメント株式会社 Battery module
CN110459710A (en) * 2018-05-08 2019-11-15 丰田自动车株式会社 Battery pack
JP2021114387A (en) * 2020-01-17 2021-08-05 Tdk株式会社 Battery pack
JP2023528296A (en) * 2021-03-31 2023-07-04 寧徳時代新能源科技股▲分▼有限公司 BATTERY, POWER CONSUMER, METHOD AND APPARATUS FOR BATTERY MANUFACTURE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011253735A (en) * 2010-06-02 2011-12-15 Toyota Motor Corp Battery pack and vehicle
JP2013165067A (en) * 2013-04-10 2013-08-22 Toshiba Corp Secondary battery pack
JP2013218790A (en) * 2012-04-04 2013-10-24 Tigers Polymer Corp Gas exhaust pipe
JP2015195131A (en) * 2014-03-31 2015-11-05 株式会社Ｇｓユアサ power storage device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011253735A (en) * 2010-06-02 2011-12-15 Toyota Motor Corp Battery pack and vehicle
JP2013218790A (en) * 2012-04-04 2013-10-24 Tigers Polymer Corp Gas exhaust pipe
JP2013165067A (en) * 2013-04-10 2013-08-22 Toshiba Corp Secondary battery pack
JP2015195131A (en) * 2014-03-31 2015-11-05 株式会社Ｇｓユアサ power storage device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018123574A1 (en) * 2016-12-27 2018-07-05 パナソニックＩｐマネジメント株式会社 Battery module
CN110459710A (en) * 2018-05-08 2019-11-15 丰田自动车株式会社 Battery pack
CN110459710B (en) * 2018-05-08 2022-06-17 丰田自动车株式会社 Battery pack
JP2021114387A (en) * 2020-01-17 2021-08-05 Tdk株式会社 Battery pack
JP7322719B2 (en) 2020-01-17 2023-08-08 Tdk株式会社 battery pack
JP2023528296A (en) * 2021-03-31 2023-07-04 寧徳時代新能源科技股▲分▼有限公司 BATTERY, POWER CONSUMER, METHOD AND APPARATUS FOR BATTERY MANUFACTURE
JP7490085B2 (en) 2021-03-31 2024-05-24 寧徳時代新能源科技股▲分▼有限公司 BATTERY, POWER CONSUMPTION DEVICE, METHOD AND APPARATUS FOR MANUFACTURING BATTERY - Patent application

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